US6617002B2 - Microperforated polymeric film for sound absorption and sound absorber using same - Google Patents

Microperforated polymeric film for sound absorption and sound absorber using same Download PDF

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Publication number
US6617002B2
US6617002B2 US09/122,240 US12224098A US6617002B2 US 6617002 B2 US6617002 B2 US 6617002B2 US 12224098 A US12224098 A US 12224098A US 6617002 B2 US6617002 B2 US 6617002B2
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US
United States
Prior art keywords
film
microperforated
sound absorber
sound
less
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime, expires
Application number
US09/122,240
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English (en)
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US20010050197A1 (en
Inventor
Kenneth Brian Wood
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Innovative Properties Co
Original Assignee
Minnesota Mining and Manufacturing Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Assigned to MINNESOTA MINING AND MANUFACTURING COMPANY reassignment MINNESOTA MINING AND MANUFACTURING COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WOOD, KENNETH BRIAN
Priority to US09/122,240 priority Critical patent/US6617002B2/en
Priority to CA002337614A priority patent/CA2337614C/en
Priority to PCT/US1999/000987 priority patent/WO2000005707A1/en
Priority to AU23232/99A priority patent/AU2323299A/en
Priority to JP2000561609A priority patent/JP4108933B2/ja
Priority to DE69902276T priority patent/DE69902276T2/de
Priority to CA002493358A priority patent/CA2493358A1/en
Priority to EP99903143A priority patent/EP1101218B1/en
Priority to US09/537,243 priority patent/US6977109B1/en
Publication of US20010050197A1 publication Critical patent/US20010050197A1/en
Publication of US6617002B2 publication Critical patent/US6617002B2/en
Application granted granted Critical
Priority to US11/015,930 priority patent/US7731878B2/en
Assigned to 3M INNOVATIVE PROPERTIES COMPANY reassignment 3M INNOVATIVE PROPERTIES COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: 3M COMPANY (FORMERLY MINNESOTA MINING AND MANUFACTURING COMPANY)
Adjusted expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/15—Sheet, web, or layer weakened to permit separation through thickness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
    • Y10T428/24298—Noncircular aperture [e.g., slit, diamond, rectangular, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
    • Y10T428/24298—Noncircular aperture [e.g., slit, diamond, rectangular, etc.]
    • Y10T428/24306—Diamond or hexagonal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
    • Y10T428/24298—Noncircular aperture [e.g., slit, diamond, rectangular, etc.]
    • Y10T428/24314—Slit or elongated
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
    • Y10T428/24322—Composite web or sheet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
    • Y10T428/24322—Composite web or sheet
    • Y10T428/24331—Composite web or sheet including nonapertured component

Definitions

  • the thermal energy is typically applied from the side of the film bearing the skin while a metal surface (e.g., a roll) acting as a heat sink, may be provided against the opposite surface, to draw heat from the bulk portions so that the bulk portions of the film do not deform during the thermal displacement treatment.
  • a metal surface e.g., a roll
  • the film may also be maintained under tension during and/or after the thermal energy treatment to assist in opening the holes. This may be done, for example, by applying positive pressure or vacuum to one side of the film.
  • the method of mounting the barrier film 2008 near the microperforated film 2002 can vary, provided the barrier film 2008 is allowed to vibrate.
  • the two films 2002 and 2008 may be mounted together by using a double-faced laminating adhesive 2010 between the two films 2002 and 2008 , typically along the edges of the two films 2002 and 2008 .
  • the barrier film 2008 may adhered to the microperforated polymeric film 2002 from above. In either case, relatively similar sound absorption spectrums are obtained.
  • the materials for the two films 2002 and 2008 are typically selected taking into account the interaction between the two films 2002 and 2008 .
  • the material types are selected to minimize interaction, such as bonding or sticking, between the two films 2002 and 2008 which would determinally impact barrier film vibration.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Building Environments (AREA)
  • Laminated Bodies (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
US09/122,240 1998-07-24 1998-07-24 Microperforated polymeric film for sound absorption and sound absorber using same Expired - Lifetime US6617002B2 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US09/122,240 US6617002B2 (en) 1998-07-24 1998-07-24 Microperforated polymeric film for sound absorption and sound absorber using same
CA002493358A CA2493358A1 (en) 1998-07-24 1999-01-18 Microperforated polymeric film for sound absorption and sound absorber using same
PCT/US1999/000987 WO2000005707A1 (en) 1998-07-24 1999-01-18 Microperforated polymeric film for sound absorption and sound absorber using same
AU23232/99A AU2323299A (en) 1998-07-24 1999-01-18 Microperforated polymeric film for sound absorption and sound absorber using same
JP2000561609A JP4108933B2 (ja) 1998-07-24 1999-01-18 吸音用微小穿孔ポリマーフィルムおよびそれを用いた吸音材
DE69902276T DE69902276T2 (de) 1998-07-24 1999-01-18 Mikroperforierte polymerfolie zur schalldämpfung and schalldämpfer der diese verwendet
CA002337614A CA2337614C (en) 1998-07-24 1999-01-18 Microperforated polymeric film for sound absorption and sound absorber using same
EP99903143A EP1101218B1 (en) 1998-07-24 1999-01-18 Microperforated polymeric film for sound absorption and sound absorber using same
US09/537,243 US6977109B1 (en) 1998-07-24 2000-03-28 Microperforated polymeric film for sound absorption and sound absorber using same
US11/015,930 US7731878B2 (en) 1998-07-24 2004-12-17 Process of forming a microperforated polymeric film for sound absorption

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/122,240 US6617002B2 (en) 1998-07-24 1998-07-24 Microperforated polymeric film for sound absorption and sound absorber using same

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US09/537,243 Division US6977109B1 (en) 1998-07-24 2000-03-28 Microperforated polymeric film for sound absorption and sound absorber using same

Publications (2)

Publication Number Publication Date
US20010050197A1 US20010050197A1 (en) 2001-12-13
US6617002B2 true US6617002B2 (en) 2003-09-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US09/122,240 Expired - Lifetime US6617002B2 (en) 1998-07-24 1998-07-24 Microperforated polymeric film for sound absorption and sound absorber using same

Country Status (7)

Country Link
US (1) US6617002B2 (ja)
EP (1) EP1101218B1 (ja)
JP (1) JP4108933B2 (ja)
AU (1) AU2323299A (ja)
CA (1) CA2337614C (ja)
DE (1) DE69902276T2 (ja)
WO (1) WO2000005707A1 (ja)

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US20050104245A1 (en) * 1998-07-24 2005-05-19 3M.Innovative Properties Company Process of forming a microperforated polymeric film for sound absorption
US20050173187A1 (en) * 2004-02-11 2005-08-11 Acoustics First Corporation Flat panel diffuser
US20050186392A1 (en) * 2000-03-20 2005-08-25 Marc Fontaine Flexible sheet materials for tensioned structures, a method of making such materials, and tensioned false ceilings comprising such materials
ES2245240A1 (es) * 2004-06-03 2005-12-16 Consejo Sup. Investig. Cientificas. Unidades de insercion microperforadas para su uso como absorbentes acusticos.
US20060065481A1 (en) * 2004-09-24 2006-03-30 Lear Corporation Perforated hard trim for sound absorption
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